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poll.h
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poll.h
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/*
* Phoenix-RTOS
*
* libphoenix
*
* poll.h
*
* Copyright 2018 Phoenix Systems
* Author: Jan Sikorski
*
* This file is part of Phoenix-RTOS.
*
* %LICENSE%
*/
#ifndef _LIBPHENIX_POLL_H_
#define _LIBPHENIX_POLL_H_
#include <sys/events.h>
#include <errno.h>
#define POLLIN 0x1
#define POLLRDNORM 0x2
#define POLLRDBAND 0x4
#define POLLPRI 0x8
#define POLLOUT 0x10
#define POLLWRNORM 0x20
#define POLLWRBAND 0x40
#define POLLERR 0x80
#define POLLHUP 0x100
#define POLLNVAL 0x200
#define POLLIN_SET (POLLRDNORM | POLLRDBAND | POLLIN | POLLHUP | POLLERR)
#define POLLOUT_SET (POLLWRNORM | POLLWRBAND | POLLOUT | POLLHUP)
#define POLLEX_SET (POLLPRI)
#define POLLIGN_SET (POLLERR | POLLHUP | POLLNVAL)
#define MAP_POLL_EVENT(MAP) \
MAP(POLLOUT, evtDataOut) \
MAP(POLLIN, evtDataIn) \
MAP(POLLERR, evtError) \
MAP(POLLHUP, evtGone)
typedef unsigned int nfds_t;
struct pollfd {
int fd;
short events;
short revents;
};
extern int poll(struct pollfd *fds, nfds_t nfds, int timeout);
static inline unsigned short eventMaskFromPoll(int pollevmask)
{
#define EVENT_MASK_FROM_POLL(pollev, evt) | (!!(pollevmask & (pollev)) << (evt))
return 0 MAP_POLL_EVENT(EVENT_MASK_FROM_POLL);
#undef EVENT_MASK_FROM_POLL
}
static inline int eventPollFromType(int evtype)
{
#define EVENT_POLL_FROM_TYPE(pollev, evt) if (evtype == (evt)) return (pollev);
MAP_POLL_EVENT(EVENT_POLL_FROM_TYPE);
return -EINVAL;
#undef EVENT_POLL_FROM_TYPE
}
static inline int eventPollFromMask(unsigned short evmask)
{
#define EVENT_POLL_FROM_MASK(pollev, evt) | ((evmask & (1 << (evt))) ? (pollev) : 0)
return 0 MAP_POLL_EVENT(EVENT_POLL_FROM_MASK);
#undef EVENT_POLL_FROM_MASK
}
#endif